The '''Church Calendar''' consists of a series of cycles by which [[feast]]s are celebrated in the [[Orthodox Church]]. There are currently three calendars in use in the Church, the '''[[Julian Calendar]]''' ("Old Calendar"), '''[[Revised Julian Calendar]]''' ("New Calendar"), and '''[[Gregorian Calendar]]''' ("New Calendar").

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The '''Church Calendar''' consists of a series of cycles by which [[feast]]s are celebrated in the [[Orthodox Church]]. There are currently three calendars in use in the Church, the '''[[Julian Calendar]]''', '''[[Revised Julian Calendar]]''', and '''[[Gregorian Calendar]]'''. The following list of dates links only to [[fixed feast]]s of the [[Orthodox Church]]. The Church's year begins with the [[Indiction]] on [[September 1]].

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==Usage==

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*The [[Julian Calendar]] churches are: [[Church of Jerusalem|Jerusalem]], [[Church of Russia|Russia]], [[Church of Serbia|Serbia]], [[Church of Georgia|Georgia]], [[Church of Poland|Poland]], [[Church of Sinai|Sinai]], [[Church of Ukraine|Ukraine]], and [[Church of Japan|Japan]].

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*The [[Revised Julian Calendar]] churches are: [[Church of Constantinople|Constantinople]], [[Church of Alexandria|Alexandria]], [[Church of Antioch|Antioch]], [[Church of Romania|Romania]], [[Church of Bulgaria|Bulgaria]], [[Church of Cyprus|Cyprus]], [[Church of Greece|Greece]], [[Church of Albania|Albania]], [[Church of the Czech Lands and Slovakia|Czech Lands and Slovakia]], and the [[Orthodox Church in America|OCA]].

A number of the above churches also have some parishes and dioceses which are on a different calendar than their respective [[primate]]s, most especially the Ecumenical Patriarchate of Constantinople in the [[diaspora]], which has many Julian Calendar parishes.

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In terms of population, most Orthodox Christians follow the Julian Calendar (roughly 144 million to 41 million) but in terms of numbers of autocephalous and autonomous church bodies, the majority use one of the New Calendars (12 to 8).

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==Calendar fixed feast days==

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The following list of dates links only to [[fixed feast]]s of the [[Orthodox Church]]. The Church's year begins with the [[Indiction]] on [[September 1]].

A number of the above churches also have some parishes and dioceses which are on a different calendar than their respective primates, most especially the Ecumenical Patriarchate of Constantinople in the diaspora, which has many Julian Calendar parishes.

In terms of population, most Orthodox Christians follow the Julian Calendar (roughly 144 million to 41 million) but in terms of numbers of autocephalous and autonomous church bodies, the majority use one of the New Calendars (12 to 8).